Open Source Rust Security Apps for Android

mhrv-rs is a Rust implementation of the MasterHttpRelayVPN project designed to bypass DPI-based internet censorship and access blocked websites through HTTP relay techniques. The software works by routing traffic through a user-deployed Google Apps Script relay, allowing requests to evade filtering systems while remaining lightweight and inexpensive to operate. The project emphasizes portability and efficiency by rewriting the original implementation in Rust, improving performance and cross-platform deployment possibilities. It supports desktop and Android environments while providing configurable relay behavior through JSON-based settings and deployment scripts. The architecture is intentionally simple, enabling users to self-host relay infrastructure without relying on centralized VPN services. Overall, MasterHttpRelayVPN-RUST serves as a lightweight censorship circumvention and privacy-focused networking tool.

Fast. Private. Together. — Send it. It's there. Engineered by Thisma Labs. Beside is a local-first peer sharing app for Windows 10/11 and Android 8.0+. Built with a native Rust core (rustls + ring) and Flutter UI, transfers stay strictly inside your local Wi-Fi at wire speed. Zero cloud, zero accounts, zero tracking. Key Features & Specifications: - Mutual TLS 1.3: End-to-end encrypted with pinned SPKI SHA-256 device keys. - 8-Digit SAS: RFC 8446 TLS Exporter pairing prevents Wi-Fi MITM attacks. - Hardware Keystore: Private keys encrypted in Windows DPAPI & Android Keystore. - Bounded 64 KB RAM: Stream multi-GB files with per-file SHA-256 verification. - OS Integration: System tray, Explorer "Send with Beside", and Android Share Sheet. - Free vs Pro: Free tier included; Pro unlocks unlimited sizes, folders, & Auto-Accept.

BoringSSL is a Google-maintained fork of OpenSSL, designed specifically to meet the security, performance, and maintainability needs of Google’s infrastructure and products. While fully open source, BoringSSL is not intended for general public use — it serves as a streamlined, heavily modified SSL/TLS and cryptography library optimized for Google’s internal ecosystem, including Chrome/Chromium, Android, and other Google services. The project prioritizes security, simplicity, and maintainability over backward compatibility. Unlike OpenSSL, BoringSSL provides no guarantee of stable APIs or ABIs, meaning third-party projects depending on it may frequently break. Google products that use BoringSSL ship their own copies and update them as needed, enabling faster iteration without legacy constraints. BoringSSL includes comprehensive API documentation, build instructions, and guidance for porting code from OpenSSL.

KEIBIDROP opens a folder on another computer over the internet as if it were a folder on your own computer. This mode is called Teleport: you open and edit the files right away, and each file streams only when an application opens it, so there is no wait for an upload or a download. KEIBIDROP also sends files between two devices with no account and no file size limit, and a dropped connection resumes where it stopped. It runs on Windows, macOS, Linux and Android, and the other person can join from a browser at https://web.keibidrop.com with nothing installed. Every connection is end-to-end encrypted with a post-quantum key exchange (X25519 and ML-KEM-1024). The engine and the desktop app are open source under AGPL-3.0-only at https://github.com/KeibiSoft/KeibiDrop, and the installers are at https://keibidrop.com/install.html.